Why would you ever wish that? You have it done, you have the perks granted, and it's there if you want to use it on some characters. Just because you have other options doesn't mean you have to use them exclusively. You have five slots, and then as many as you want to pay for, to add different visuals to.

Good point, I didn't know there were 5 slots.

And now that I look over the Heritage armor again, it's pretty bad ass even compared to Primeval. Again, warrior.

Judging by the icons, the costume armor might be armor-type specific. Heavy, primeval; medium, Krytan; light, profane. Obviously some professions are new to GW2, so having profession-specific armor sets for an armor type made for inconsistent professions wouldn’t work.

Or I guess they could be like the costumes in GW1 and just be that; costumes.